Re: [SystemSafety] Statistical Assessment of SW With Deliberate Unreliability for a SIL requirement

From: Peter Bernard Ladkin < >
Date: Wed, 21 Jan 2015 20:52:16 +0100

On 2015-01-21 17:53 , Martyn Thomas wrote:
> Such statistical analysis is probably based on assumptions that would be
> invalid if you consider a hostile security environment.

That's prima facie correct. A key assumption is that the future distribution of inputs is identical to the past distribution. If there are ways in which human agency can skew the distribution, and you expect them to do so, then the analysis is moot.

PBL Prof. Peter Bernard Ladkin, Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany Je suis Charlie
Tel+msg +49 (0)521 880 7319 www.rvs.uni-bielefeld.de



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systemsafety_at_xxxxxx Received on Wed Jan 21 2015 - 20:52:26 CET

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